If your class implements the configurable interface, hadoop will call the setConf method after creating the instance. Look in the source code for ReflectionUtils.newInstance for more info On Mar 14, 2012 2:31 AM, "Jane Wayne" <jane.wayne2...@gmail.com> wrote:
> i am using the new org.apache.hadoop.mapreduce.Partitioner class. however, > i need to pass it some background information. how can i do this? > > in the old, org.apache.hadoop.mapred.Partitioner class (now deprecated), > this class extends JobConfigurable, and it seems the "hook" to pass in any > background data is with the JobConfigurable.configure(JobConf job) method. > > i thought that if i sub-classed org.apache.hadoop.mapreduce.Partitioner, i > could pass in the background information, however, in the > org.apache.hadoop.mapreduce.Job class, it only has a > setPartitionerClass(Class<? extends Partitioner>) method. > > all my development has been the new mapreduce package, and i would > definitely desire to stick with the new API/package. any help is > appreciated. >
